Apart from simplicity, another advantage of using process substitution is Bash will automatically parallelize your tasks. Returning to our first example…
$ diff <(curl http://somesite/file1) <(curl http://somesite/file2)… Bash will run both those curl commands in parallel. Sweet huh?
https://medium.com/@joewalnes/handy-bash-feature-process-substitution-8eb6dce68133#.bsbczvvc9
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